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* Source commands * Missing word * Processing commands * Apply suggestions from code review Co-authored-by: Alexander Spies <alexander.spies@elastic.co> * Review feedback * Add sort detail for mv * More review feedback --------- Co-authored-by: Alexander Spies <alexander.spies@elastic.co>
48 lines
1 KiB
Text
48 lines
1 KiB
Text
[discrete]
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[[esql-eval]]
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=== `EVAL`
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**Syntax**
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[source,esql]
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----
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EVAL column1 = value1[, ..., columnN = valueN]
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----
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*Parameters*
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`columnX`::
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The column name.
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`valueX`::
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The value for the column. Can be a literal, an expression, or a
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<<esql-functions,function>>.
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*Description*
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The `EVAL` processing command enables you to append new columns with calculated
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values. `EVAL` supports various functions for calculating values. Refer to
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<<esql-functions,Functions>> for more information.
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*Examples*
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[source.merge.styled,esql]
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----
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include::{esql-specs}/docs.csv-spec[tag=eval]
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----
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[%header.monospaced.styled,format=dsv,separator=|]
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|===
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include::{esql-specs}/docs.csv-spec[tag=eval-result]
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|===
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If the specified column already exists, the existing column will be dropped, and
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the new column will be appended to the table:
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[source.merge.styled,esql]
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----
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include::{esql-specs}/docs.csv-spec[tag=evalReplace]
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----
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[%header.monospaced.styled,format=dsv,separator=|]
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|===
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include::{esql-specs}/docs.csv-spec[tag=evalReplace-result]
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|===
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